Download or read book Application of Nonlinear Interactions in Acoustic Media to Microwave Signal Processing Devices written by Michael Waldner and published by . This book was released on 1972 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The implementation of a number of signal processing functions. The work under the contract was directed toward the implementation of the convolution function using piezoelectric crystals, primarily lithium niobate, as the acoustic medium. The objective was to obtain broadband operation, to minimize spurious signals, to characterize the devices in this mode of operation, and to evolve a design theory for these devices. The development of suitable broadband input transducers and the design of the coupling structure were both major elements of the effort. Three devices were delivered as a result of the work; prime concentration was directed toward completion of a broadband device encompassing the frequency range of 95 to 180 MHz, with a convolution time of 15 microseconds. Narrower band devices operating at 195 MHz center frequency with a convolution time of 15 microseconds and at 146 MHz with a convolution time of 8 microseconds were also delivered.
Download or read book Nonlinear Microwave Signal Processing Towards a New Range of Devices written by R. Marcelli and published by Springer. This book was released on 1996-11-30 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the NATO Advanced Research Workshop, Rome, Italy, 3-6 October, 1996
Download or read book Microwave Acoustic and Bulk Device Technique Studies written by and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The final report describes device research in both linear and nonlinear acoustic devices for signal processing. Wideband, monolithic surface-acoustic-wave convolvers have been developed, based on nonlinear interaction between surface acoustic waves and conduction electrons in zinc oxide film on sapphire structures, achieving new ranges of conversion efficiency. A high speed 8-bit analog-to-digital converter has been developed, using a heretofore unused property of linear surface acoustic wave delay lines, which has potential for multichannel parallel processing with large data throughput. (Author).
Download or read book Study of Nonlinear Acoustics for the Purpose of Processing Sophisticated Signals written by C. F. Quate and published by . This book was released on 1974 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nonlinear interaction between two surface acoustic waves can be used in a number of signal processing devices. In this report the principles which underlie this interaction are developed both theoretically and experimentally. In the signal processing devices it is demonstrated that both convolution and fourier transformations can be carried out in real time. In the imaging work it is shown that acoustic surface waves can be used to scan optical images which are projected onto a semiconducting layer of silicon. This scanning process transfers spatial image pattern into a temporal pattern which can be transmitted electrically to a remote display station. (Modified author abstract).
Download or read book Microwave Acoustic and Bulk Device Technique Studies written by Stanford University. Microwave Laboratory and published by . This book was released on 1971 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microwave Acoustic and Bulk Device Technique Studies written by Stanford University. Microwave Laboratory and published by . This book was released on 1974 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Wave Semiconductor Convolver Applied to Electrical and Optical Signal Processing written by Herve Renson Gautier and published by . This book was released on 1975 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents an experimental and theoretical study of the interactions between acoustic surface waves on a piezoelectric insulator and charge carriers in a neighboring semiconductor separated by a small airgap; and the application of these phenomena to signal processing and optical imaging. Although the two media are mechanically isolated, the electric field associated with the surface waves penetrate into the semiconductor and interact with its charge carriers. This interaction is nonlinear, and, in the case of two oppositely propagating surface waves, real time convolution is performed. A new theory of the convolution interaction, taking into account the possible presence of a depletion, inversion or accumulation layer at the surface of the semiconductor, resulting from a built-in or applied dc field is presented. Experimental measurements for both n- and p-type Silicon on Lithium Niobate systems are in very good agreement with this theory, and they lead to a novel technique of measurement of the surface state distribution on semiconductors. The silicon on lithium niobate structure used gives rise to one of the largest convolution efficiencies reported to date. Several signal processing applications are presented. They show the versatility of the device which can be employed as a programmable filter or a parametric processor. In addition, the first autocorrelation is demonstrated by cascading two convolvers. The acoustic convolver was adapted for the scanning of optical images.
Download or read book Signal Processing in Acoustic Surface Wave Devices written by Stanford University. Microwave Laboratory and published by . This book was released on 1971 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Force Research Resum s written by and published by . This book was released on with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Signal Processing by Parametric Interactions in Delay Line Devices written by Stanford University. Microwave Laboratory and published by . This book was released on 1972 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microwave Acoustic and Bulk Device Technique Studies written by Stanford University. Ginzton Laboratory and published by . This book was released on 1976 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Surface Acoustic Wave Signal Processing Devices written by Martin D. Motz and published by . This book was released on 1975 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Technology Program Digest written by United States. National Aeronautics and Space Administration and published by . This book was released on with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Technology Program Digest Flash Index written by and published by . This book was released on 1967 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1973 with total page 1068 pages. Available in PDF, EPUB and Kindle. Book excerpt:
